Jessica Simpson looked like she was having a ball with ZZ Top band members Billy Gibbons and Dusty Hill gearing up to perform at Camp Pendleton Marine Corps Base in California yesterday. This girl loves to strut her stuff for guys in uniform, and we're sure she didn't disappoint last night when she performed "These Boots Are Made For Walkin'." While the spotlight often seems to be focused on the older Simpson sister, Jess couldn't help spilling one little secret about Ashlee's wedding — unsurprisingly, Jess will serve as the maid of honor for the ceremony. Now, if only Jess would open up about whether or not Ashlee is going to need a maternity wedding gown.

She used to be a decent singer but when her 3rd album came out it started to sound like she was growling more than singing. And she doesn't sing from her diaphragm she sings from her throat and overextends. If she had voice lessons on the proper way to use her body to sing I think she'd sound a LOT better.